%I #14 Feb 06 2019 09:07:51

%S 8,6,9,4,1,9,3,9,9

%N Decimal expansion of the asymptotic density of e-perfect numbers (A054979).

%H Peter Hagis, <a href="http://dx.doi.org/10.1155/S0161171288000407">Some results concerning exponential divisors</a>, International Journal of Mathematics and Mathematical Sciences, Vol. 11 No. 2 (1988), pp. 343-349.

%H Eric Weisstein's World of Mathematics, <a href="http://mathworld.wolfram.com/e-PerfectNumber.html">e-Perfect Number</a>

%F Equals Sum_{i>=1} beta(e(i))/e(i), where beta(n) = (6/Pi^2)*Product_{p|n}(p/(p+1)) and e(i) = A054980(i).

%e 0.00869419399...

%Y Cf. A049419, A051377, A054979, A054980.

%K nonn,cons,more

%O -2,1

%A _Amiram Eldar_, Aug 31 2018

%E Offset corrected by _Jianing Song_, Feb 06 2019